One of the unknown solutions in Part 2 is Na2S which of the following statements

ID: 544527 • Letter: O

Question

One of the unknown solutions in Part 2 is Na2S which of the following statements is true?

A. the cation's name is sodium(II), the anion's name is sulfide and the solution is colorless and clear and has no smell

B. the cation's name is sodium, the anion's name is sulfide and the solution is colorless and clear and smell like rotten eggs

C. the cation's name is sodium, the anion's name is sulfate and the solution is colorless and clear and has no smell

D. the cation's name is sodium (I), the anion's name is sulfide and the solution is colorless and clear and smell like rotten eggs

E. the cation's name is sodium, the anion's name is sulfide and the solution is colorless and clear and has no smell

Na2S ---> 2 Na+ + S2-

So the cation is Na+ & anoin is S2-

Na2S and its hydrates emit hydrogen sulfide, which smells like rotten eggs

Therefore the cation's name is sodium, the anion's name is sulfide and the solution is colorless and clear and smell like rotten eggs.

So option (B) is correct.

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